<template>
  <a-modal
    title="新建规则"
    :width="640"
    :visible="visible"
    :confirmLoading="loading"
    @ok="() => $emit('ok')"
    @cancel="() => $emit('cancel')"
  >
    <a-spin :spinning="loading">
      <a-form :form="form" v-bind="formLayout">
        <!-- 检查是否有 id 并且大于0，大于0是修改。其他是新增，新增不显示主键ID -->
        <a-form-item v-show="model && model.id > 0" label="主键ID">
          <a-input v-decorator="['id', { initialValue: 0 }]" disabled />
        </a-form-item>
        <a-form-item label="描述">
          <a-input
            v-decorator="[
              'description',
              {
                rules: [
                  {
                    required: true,
                    min: 5,
                    message: '请输入至少五个字符的规则描述！',
                  },
                ],
              },
            ]"
          />
        </a-form-item>
      </a-form>
    </a-spin>
  </a-modal>
</template>

<script>
import pick from "lodash.pick";
// 表单字段
const fields = ["description", "id"];

export default {
  props: {
    visible: {
      type: Boolean,
      required: true,
    },
    loading: {
      type: Boolean,
      default: () => false,
    },
    model: {
      type: Object,
      default: () => null,
    },
  },
  data() {
    this.formLayout = {
      labelCol: {
        xs: { span: 24 },
        sm: { span: 7 },
      },
      wrapperCol: {
        xs: { span: 24 },
        sm: { span: 13 },
      },
    };
    return {
      form: this.$form.createForm(this),
    };
  },
  created() {
    // 防止表单未注册
    fields.forEach((v) => this.form.getFieldDecorator(v));
    // 当 model 发生改变时，为表单设置值
    this.$watch("model", () => {
      this.model && this.form.setFieldsValue(pick(this.model, fields));
    });
  },
};
</script>